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Finding the Fourth Proportional to 7,021,007.40, 9,842,681.40 and 7,021,007.40

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Solution

The fourth proportional to 7,021,007.40, 9,842,681.40 and 7,021,007.40 is: 9,842,681.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021,007.40 : 9,842,681.40 = 7,021,007.40 : x
  2. Step 2: Convert to fraction form
    7,021,007.40/9,842,681.40 = 7,021,007.40/x
  3. Step 3: Cross multiply
    7,021,007.40x = 9,842,681.40 × 7,021,007.40
  4. Step 4: Simplify right side
    7,021,007.40x = 69,105,538,945,242.37
  5. Step 5: Solve for x
    x = 69,105,538,945,242.37/7,021,007.40
  6. Step 6: Final answer
    x = 9,842,681.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.